Securing together surfaces of fibrous material.



J. R. HARBECK. SECURING TOGETHER SURFACES 0F FIBROUS MATERIAL. APPLICATION FILED AUG. 24, 1908.

- Patented Jan. 12, 1909.

2 SHEETS-SHEET 1.

' (whack 55 m M M J. R. HARBECK. SEGURING TOGETHER SURFACES OFIFIBROUS MATERIAL.

APPLICATION FILED m. 24, 190B.

Patented Jan. 12, 1909.

2 SHEETS-SHEET 2.

Bluurutur Anururg.

Fig. 2

.Hcwbww UNITED STATES PATENT OFFICE. I I

JERVIS R. HARBEGK, OF DETRQIT, MIGHIGAN, ASSIGNQR TO'KEMIWELD'GAN COMPANY, OF DETROIT, MICHIGAN, A CORPQRA'PION OF MIGHLIGAN.

sncnnme TQGBTHIEB BURFAGES= OF FIBROUS MATERIAL.

Specification of; Letters Patent.

Patented.- Jan. L2, L909 Application filed August 24, 1908. Serial in). 400,122.

To all whom it may concern:

Be it known. that l, JERVIS R. HARBECK, a citizen of the United States, and residing at Detroit, in the county of Wayne and State of Michigan, have invented a new and useful Process for Securing Together Surfaces of Fibrous Material, of which the following is a specification.

This invention relates to a. process for treating the glue or other cement with which fibrous material has been coated previously to being pasted together, for the purpose of rendering the cement insoluble after it has set. i

The invention consists in treating the ocment on a freshly coated surface of one thickness of fibrous material with a spray of fixing chemical just before a secondthickness is applied thereto; in contra-distinctiontotpassing the coated thickness through a ha of the chemical, and also in contradistinction to mixing such a chemical with the liquid cement before the fibrous ma terial is coated therewith.

In carryin out my invention in the manufacture of tu es, I may provide an. attachment for tube making machines such as shown in my Patent No. 862,390, dated August 6th, 1907, which attachment may consist of a novel siphon and spray' f device mounted in a. case through which t e band of tube material asses. In combination therewith a controlling mechanism may be employed whereby the spray is applied to the coated surface of the tube material only during the time the paper is passing the spraying mechanism.

Where the fixing chemical is mixed with the glue or other cement, it has a tendency to so change the same as to render it useless in a very short time. Where the cement coated material is assed. through a bath of the fixing chemical an amount of the cement seems to be taken up by the chemical, resulting in a ropy, thick mass.

y pp ying the chemical in the form of a spray, 1n-

timate union of the cement and the chemical is assured and the chemical. can. be ap lied such a short time before the second t ickness of fibrous material is laid onto the first that the cement is not appreciably affected, permitting the cement to penetrate the pores of the second thickness before it sets.

In the accompanying drawings, Figure 1 is a side view of a tube machine. Fig. 2 is a detail on a larger scale of'the controlli'n valvemechanism, Figs. '3 and 6 are verticaT and horizontal cross sections of the valve. Fig. 4 is an enlar ed detail of the siphon. Fig. 5 is a longitudinal cross section of the spray chamber.

Similar reference characters refer to like parts throughout the several views.

The usua commercial glues are not insoluble, but can be rendered so by treating them with certain chemicals, such as formaldehyde and bichromate of potash. As the addition of such chemicals causes the glue to harden very quickly, it is necessary that this addition should be accomplished immediately before the coated surfaces are brought together. In machines for spirally windin tubes and other machines where the materia to be cemented passes uninterruptedly through the machine the mechanism may be uite simple, but for machines for convolute y winding tubes and for other machines where the material is required at intervals, mechanism must be provided for adding the chemicals as the materials are used. I

Fig. 1 shows the tube winding machine of the above named patent, to which reference is made for further description. In the tube machine, the paper or other fibrous material is taken from a roll 5 mounted on a shaft 4 carried by the hangers 3. These hangers are secured to the lower side of the bed 1, which bed is carried on the legs 2. The band A is carried up and then back, passing around the coating roller 7, then down around the tightening roller 21, up

over the guide roller 25, forward over the plate 2'! and the roller 50 to the winding mechanism comprising the mandrel 81 and the driving means therefor. The shaft 51 driven by the pulley 52 and in turn drives the main shaft .56. Each revolution of the main shaft constitutes a cycle of 'the 'machine which embraces all the operations necessary to form a tube. Five steps are necessary in this machineto form the tube from the coated material. First, the strip A. of the material is fed to the mandrel by the feed rolls. Second, the mandrel Wind's the strip upon itself and stops. Third, the shear cuts off the strips Fourth, the mandrel revolves while the end of the strip is wound and stops. Fifth, the tube is pushed oil the mandrel. It will be seen that during the first and second steps, the strip A moves 1 forwanl, which two steps occupy about the same time as the other once. It will therefore be necessary to spray the cement on the strip about one half of the time, as the strip moves only about one half or the time.

the spray should be confined, a case 30 is mounted on the plate It, and provided with tubes 41 which dip below the solution in the tank, and extend through the tube 39 and have carved ends 42. A nozzle 43 connects into the elbow or branch 40, which branch connects to the flexible tube 44 that connects to the air valve. The air valve is controlled by I acam 45 mounted on the main shaft 56 of the tube machine. The valve comprises a body portion 46 adapted to be mounted on the bed of the tube machine which body is provided with a valve seat 47 for the valve 48. A valve stem 49 has a collar 50 which engages the spring 00 through which the valve 18 normally held closed. 7 A lever 61 mounted on the body of the valve has a roller 62 at its end to engage the cam 45. The outlet pi )e 63 connects to the flexible tube 44 and to the siphon, while the inlet pipe 64 connects to an air compressor through a pipe 65. Instead of compressed air, steam may sometimes be employed.

The operation is as follows. While the tube machine is running, a tube is formed at each revolution of the shaft 56, and the strip A will travel through the case 30 and remain at rest practically e ual periods of time. The cameo will hol open the air valve during the time the strip moves, thus causing a s ray of the solution to fall on the strip. Vhen the strip is at rest, the valve will be closed and there will be no spray. When glue is the cement employed and is treated with formaldehyde, the tubes after the cement is dry, may be employed for making containers for linseed oil, vinegar and water. Casein treated with borax may be emplo ed as a cement for containers for foods. here bichromate of potash is used, sunlight should be excluded until the tube is finished and the tubes then exposed to sunlight to fix the cement. Any desired content and fixing chemical may be employed according to the material to be placed in the tubes. Any good air valve may be employed and the other details may be varied according to the tube machine used and the product to be turned out.

With machines such as shown in the 0s born patent. No. 683,208 dated Aug. 13th, 1907, the mounted in proper position by a skilled mechanic and the regulating valve omitted as the material is used continuously. Any other desirable mechanism may be employed to treat the cement before the thickness of materials are brought into contact with each other without departing from the spirit of my invention.

Having now explained this process, what I claim as my invention and desire to secure by Letters Patent is 1. The rocess of securing together surfaces of brous material which consists in coating one surface of the material with cement, spraying this surface with a chemical which will render the cement insoluble after it has set, and then immediately winding the material into tubes.

2. The process of securing surfaces of fibrous material together and of rcndering the cement applied to the surface insoluble consistin in passing the same through a casing w ierein it is subjected to a spray of fixing chemical and immediately applying a second surface thereto.

3. The process of securing surfaces of fibrous material together which consists in coating one surface of a band of fibrous material with liquid glue, passing the hand through a casing where the glue coating receives a spray of formaldehyde solution, then immediately winding the band into tubes and permittin them to set.

4. The rocess'o securing together two surfaces 0 fibrous material and of rendering the cement between the surfaces insolublc consisting of coating the cement on one surface with a chemical before the surfaces are brought into contact and then immediately applying the second surface thereto.

5. The process of rendering the glue between two thickncsscs of fibrous material insoluble consisting of spraying the glue with a formaldehyde solution before the surfaces are brought into contact.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesscs.

JERVIS R. HARBECK.

\Vitnesscs:

Emzanrz'rn M. BnowN, EnwAm) N. Paoensnx.

spraying mechanism may be easily 

